Perforating-machine



J. A. MACKEY. PEHFOHAHNG MACHINE. APPLICATION FILED FEB. 23, |917.

Patented Feb. 3,1920. 3 SHEETb-SHEET I J. A. MACKEY. PERFORATING MACHINE. APPLICATION FILED FEB. 2a. 1917.

vPatented Feb. 3,1920.

SHEET-SHEI 2 hun? 3v, ...1.113.,

mmv

I. A. MACKEY. PERFORATING MACHINE. APPLICATION ELLED FEB. 23, |917.

Patented Feb. 3,1920.

3 SHEETS-SHEET 3.

WUNITEE STATES 'PATENT OFFICE.

JAY A. MACKEY, GF LYNN, MASSA H "SETTS', ASSIGNOR TO THE SINGER MANUFAC- TURING COMPANY, OF ELIZABETLPRT, NEW JERSEY, A CORPDRATION OF NEW JERSEY.

'EF-1R11 ORATIN GVIACHINE.

To all wim/fz. t may concern: p

Be it known that i, JAY ri. MAoKnY, a citizen of the United States, and resident of Lynn, county of Essex, Commonwealth of Massachusetts, have invented an Improvement in Perforating-h/lachines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts in cach of the several views.

This invention relates to machines for op erating on sheet or strip material at spaced apart intervals and with a feed movement of the material, and more particularly to a machine for performing a perforating, or more or less analogous operation on the material at spaced apart intervals. While havl ing other and more general fields of useful ness the invention is well adapted and designed for punching holes automatically at spaced intervals in leather, fabric or other relatively thin material. A prime object of the invention is to provide improved mechanism whereby the operating` tool. such as a perforating punch, may be kept in continuous operative relation with a driving mechanism so as to be continuously driven with an elimination of disconnecting clutch devices, and with provision whereby the perforating punch or other tool may be moved at will into and out of operatin position without disturbing its operating co driving mechanism; e'. c., the range of movenient of the tool is shiftable at will from an operating position where it cooperates with a suitable punch block or other backing, and with a feed for the material, to an inoperative position where it does not engage the material in its range of movement. A further important object is to provide a machine equipped with a shiftably mounted continuously driven tool and in combination therewith a feed mechanism for the material shiftable into and out of operating position simultaneously with the shifting of the tool into and out of its operating position, and preferably by the same operating means. A. still further object is to provide improved operating means for a punch or like tool including a continuously engaged operating connection with driving mechanism and having a manually shiftable member operable by the hand or a foot treadle adapted to move the punch into and out of its open Specification of Letters Patent.

Patented Feb. 3, 1920.

serial No. 150,458.

ating range at will. The foregoing and other objects and advantages of the invention will more fully appear from the follow ing detailed description, and the distinctive features of novelty will be pointed out in the appended claims.

Referring to the drawings:

Figure l is a side elevation of a machine embodying the features of my'invention;

Fig. 2 is a` front elevation thereof with parts broken away;

Fig. 3 is a transverse vertical section on line 3 3 of Fig. l;

Fig. s is a horizontal section on line 1 -4 of Fig. l;

Fig. 5 is a. vertical detail section showing the shiftable driving connection to the punch plunger;

Fig. 6 is a sectional detail on line 6-6 of Fig. 5; and

Fig. 7 is a detail elevation showing the elements of the driving connection between the drive shaft and the punch.

rEhe frame l of the machine has a horizontaliy extending portion 2 constituting a housing and mounting for heifeed mechaand equipped with a table 3 constitutmaterial support over which the sheet in@ a w s Y A, or strip being operated on is Ted. The frame is also formed with an upright portion 4 equipped l1 spaced apart horizontal bearings 5, (i in which is journaled a driving shaft i suitably driven as by pulleys 8 at one end thereof. The frame upright 4; is also equipped with akhorizontally extending portion formed with hearings 9 spaced above the table '3 in which is slidably fitted punch piunger l0. This plunger is equipped with a suitable perforating punch ll at its lower end, such punch typifying in a broader aspect any suitable operating tool. As shown, a suitable punch block 12 is fitted in the extension 2 for copera tion with this punch when it is lowered to operative position, as now to be described. fit its upper end the plunger l0 has piv otally engaged therewith at 13 a pitman 14, the other end of which is engaged with a crank pin 15 integral with or rigidly fixed to a crank pin bearing member shown as a block 16, the body of which is cylindrical, or circular in cross-section and rotatably fitted in a sleeve 17 formed at one end of a bar 18, the other end of which is pivotally mounted on zi lug of the treme work at 19. The swinging outer end of' the ber 18 with its bearing sleeve 17 is drawn yieldingly upward by t spring 2O anchored to the traine work, so that it is held constantly in engagement with the projecting end oi un operating` lever 2l by which it iii-ey be pressed downward et will :is presently eX- plnined. The block l@ is thus shiitable leterelly upward and downward es shown with reference to the driif'ing.;` shaft 7, es the swinging bur 18 is acted on by the lever 2l. A continuous driving connection from the shaft 7 to the crank pin beharing` member' or block 16 is preserved throughout such leterel shifting by means of en intermediate block or member having one ot its :feces in slideble keyed engagement with the end et the shaft 7 es indicated at 2S end its other i'izice with e slidnble keyed engegeinent 24 with the crank pin bearing nieinbcr or block 16, the key connections 23, il extending in directions :it right angles to erich other. hus the intermediate block or inem-` ber 22 is guided for straight line nieve; i nt both with respect to the shaft 7 und with respect to the crank pin bearing member 1G, and so the crank pin bearing' in. nber 16 along with the crunk ind tool connected therewith may be sliitted vertically with :i straight line movement which wil bring' the critnli Qin bein-ing member or block li into more or less otl'set relation with respect to the shaft 7 while preserving undisturbed trie; dri-vine` relation, this being allowedL for by the vertical components olf slidingv movement in the sliding key connections Q3, 24 when each of these is in other than its horizontal position, it being; noter that when either et seid k y connections is in its horizontel posi'- tion the other thereof is straight Vert-ical. The intermediate block 22 thus constitutes a. lioeting connection between the driving shaft 7 und the crank bin bearing; member 16. lit will be understood that wh'. the key or spline connections Q3, 2li; are herein shown :is iorined with the rib member ci such connection on the intermediate block :it erich side thereof, this iQ nierelj.7 illustrative and the groove might instend.r et either or both sides, be 'formed in the block with the meting ribv on the cooperating' member. lt will be noted th: the end or i adjacent the sh' ible block 0 with un enlarged annuler recess 5 nenni tingthe requisite renee oi? seittingA to tn; intermediate block the block 1.6 iy raised and lowered for the adjustment et the tool as described. Thus ttor n punch or any more or less similar reciprocating' tooln :i continuous driving connection is proii'ideds permitting n. shifting' of the tool through n ronge sutlicient bring it into operating position, or out of operetinle relation to the meter-inl. l V

weones My invention in its more comprehensive forni includes in combination with e shiftlably mounted continuously operated tool ot the charlie-ter described, a feeding device connected :ind arranged to be simultaneously moved into and out ot materiel engaging position in synchronisin with the movements oi the tool. As herein shown the feed mechanism consists in zi feed brrr 25 equipped with e usuel serrated feeding surrece 27 et its top, this lier being` adjustnbly iiXed es indicated et on the end of e rock shaft tor n. so-cn-lled tour-motion led inovement which may be ott usuel known type., eX- cept :for the special provision connecting' it with the shittnble tool es presently described. The rock shett 29 is oscillated to swine' the feed bnr to and fro in usual manner by an ups-tending` arm 30 liXed thereto having' at its end e. bearing heed 3l operating in the lower end of a slotted bei which pivots on e fulcrum block on which it is slidable the upper end ot this bar being' pivoted et 3e to lever tulcrumed et in the freine Work und having' e forked upper end 86 engaging' :in eccentric on the shaft 7. The fulcrum block may be mounted in usuel manner on e bracket member' l? adjustable on it vertical ber 3S, end capable of being` set in adjusted position by clamp screw 3E). The bei: normally held yieldingly in en intermediate posit-ion by springs l0 reacting` between zibutnients on the treme und heeds eil on seid bei'a the fulcrum block 33 being' thus yieldingly held in e. position to eilen-t noi-mel .Ji-'ceding strokes Oi? the feed bnr. The bnr 38 nifty be sliiited to Vary the position of the, tnlcruni 83 end hence the length the 'feed strokes by e rock shett 4Q have pin .fr yoke member 44 prolaternlly .from seid bur, the shett i operable by en erm fr?) 'projecting the end et the machine tor convenient manuel operation by tree-.die or by hand, all us is usuel in this type 0f machine. Por moving` the feed bnr upward to materiel engaging position the beginning et n` feed stroke', an d downward to disengege the mtteriel. et the end ot n fee-:l stroke, n ber l5 is pivoted et life to en outer projection of e fleeting; freni, in which the shaft F29 jourin d.) this ioetingr trzune being' pivoted to tie slr/itlY fr?. The bei' lo is in two parts iiifxetee u ther et i id having its upper pertlziterelly oifiiset es i diczited et with the extremity thereof niroted et t9 to bell crunk lever the upper end ot' which is forked to eng-'ege un eccentric on the shaft 7, lt will he observed that by rees n 0;? the lelerel offset 4:8 et the top ot the bar 45, the total length oli the ber, e., the distance between the pivot points #i6 and fl-9 will be increased :is the bei' broken at iront the straight elnenient es seen inrFig. 3, be

g :i lever erin L3 liXed thereto and carrycause the pivot point 45 will then move more. nearly into alinement with the end pivots 46 and 49. A spring 5l engages the bar 45 adjacent the pivot 45 tending to normally move the two parts of bar 45 about the pivot 45 so as to break said bar, 2'.. e., to lengthen its total extent, and thus rock the iioating Jruine 47 downward which depresses the feed bar 2G out oit operative position. The bar 45 is provided adjacent the pivot 45 with a cam surface 52 engageable by a projection late'ully extending from the end of one arm 54 ot a bell cranlr lever which is pivoted at 55 on the trame and has its other arm 56 extending upward with a link 57 pivoted at its upper end, the other end of said linl: beingI pivoted to an arm 58 which constitutes the other end or' a lever whose arm 2l has already been described, said lever having an intermediate ulcrum 59 at the top ot the frame. The lever arm 54 may be operated from a depending bar (i0 pivoted thereto, at the lower end of which a suitable treadle may be fixed, a suitable spring G1 being interposed to act on said bar ttor normally lifting` it and the lever arm 54 to an upper limit of movement. The lever arm 56 and the link 57 constitute a toggle which when straightened as shown in Fig. l, will swing the lever arm 2l downward and thus move the tool plunger l() and the punch down to operatiine position7 t'. c., so that at the lower limit of movement of the punch ll it coperates with the punch block 12, while when the lever arm 54 is swung upward, the toggle 56, 57 is broken and the punch withdrawn from operatingl position, though conti* ning its vibrating movement as described. It may thus be understood that as the levei` arm 54 is swung upward, and the punch 1l thus raised out of operating position, the i'eed bar 26 is at the same tii'ne depressed below its operating position by the projection 53 moving ed the cam 52 and thus permitting the pivot 45a to swing outward under the action of the spring 5l to lengthen the bar 45 and thus swing the loating 'trame 47 of the oscillatingfeed shai't 29 downward7 while upon a depression of the arin 54 by the treadle, at the same time that the punch is moved downward to operative position by the straightening of the toggle 57 the 'feed bar 26 moved up to niaterial engaging position by the moving inward oi? the pivot 45 on the engagement of the projection 53 with the cam 52.

ln use it will be understood that the spring (5l or equivalent means acting on the treadl bar GO will hold the lever arm 54 elevated, this through the otherI arm 55 of the bell crank lever 54-56 swinging the lower end oi the linl; :inward 'troni the position shown in l and thus swinging upward the outer end of the lever 2l'to hold the punch plunger elevated, z'. e., with its range of movement out of operative position. At the same time the projection 5B on the outer end of the arm 54 is held raised above and oil of the cam 52, thus permitting the spring 51 to shift the pivot 47 to thelett from the position shown in 3, t'. c., more nearly into alinement with the pivots 49, thus swinging downward the rock` shaft 2S) and with it the feed bar to hold it `for an inoperative range ot movement. Upon depressing the treadle the parts are moved to the position shown in the drawings wherein the toggle formed by the lever arms 56, 57 is straightened and the punch plunger` thus moved down to operative position, while at the same time the projection 53 moving down to engage the cam moves the pivot 47 in the bar 45 to the position shown, e'. c., farther from alinement with the pivots 46, 49 and thus swings the shaft 29 and the feed bar up into operative position; the feed bar and punch plunger thus remaining coperative in operative position so long as the treadle is held depressed but being both returned simultaneouslyand automatically to inoperative position as soon as the treadle is released-the operative condition ot the machine being thus under full control oiE the operator by simple manipulation of a single treadle;y

The machine is showny as equipped with a usual roller presser foot 62 carried at the` lower end of a presser bar 68 slidably mounted in the trame and yieldingly pressed downward by a spring- 64,- this presser toot having a usual cam device 65 for lifting it operable by a lever 66, `these forming no part oi the present invention. A suitable mounting for the intermediate portion of the shaft 42 is provided by a' block 67 providinn` at its ends spaced apart bearings 'for said shait and itselit having a stout lateral stud 68 extending into, and fixed in, a socket in the 'iframe as indicated at G9, a suitable clamp screw 70 being` provided :tor removably fixing this stud and the block 67 in place. lt will be understood that the described mechanism. while well adapted, and especially designed, for use in a perforating machine employing` a perforating punch, is in a broader aspect and as to most oit its essential features, likewise adapted for other machines employing a reciprocatingtool and wherein the material is fed step-bymtep to space the punching or other operations thereon. I am aware that the invention and its respective 'features may be embodied in other specific 'forms without departing from the spirit or essential attributes thereof and l therefore desire the present embodiment to be considered as illustrative and not restrictive, reference being hadto the appended claims rather than to the ioregoing description to indicate the scope of the invention.

Having described my invention, what I claim as new and desire to secure by' Letters Patent is:

l. A machine of the kind described comprising a perforating tool mounted for vibration and also for bodily endwise shifting to and away from an operative position, a.

relatively fixed backing block coperative with said tool in its operative position, and rotary driving means for said tool, said rotary driving means including a drive shaft, and van element slidably shiftable by a straight line movement with respect thereto with connections to shift the tool therewith and equipped to transmit the rotary movement of the shaft as a vibrating,` tool movement throughout the shifting range thereof.

2. A machine of the kind described, comprisingi` a perforating tool, means for mounting said tool for vibration and also for bodily endwise shifting` to and away from an operative position, a relatively fixed backing block coperative with said tool in its operative position, and rotary drivingmeansV for said tool, said rotary driving means consisting in a drive shaft, an intermediate element keyed to the end thereof for limited transverse sliding movement, a crank-pin-bearing member slidably keyed to said intermediate element 'for sliding at an angle with reference to the keyed connection thereof with said shaft, and manually controlled. means for adjusting said crankpin-bearing` member transversely with respect tosaid shaft.

3. A machine of the kind described, comprising' a tool, means for mounting' said tool for vibratory operative movement and also for bodilyV shifting into and away from an operative position, rotary driving; means for saidv tool consisting in a drive shaft, an intermediate element keyed thereto for limited transverse sliding` movement, a member equipped for imparting vibration to said tool slidably keyed to said intern'iediate element for sliding at an angle with reference to the keyed connection thereof with said shaft, and manually controlled means for adjusting' said vibration imparting member transversely with respect to said shaft.

4C. A machine of the kind described, comprising a perforating tool mounted for vibration and also for bodily endwise shifting` to and away from an operative position, a relatively fixed. backing` block cooperative with said tool in its operative position, and rotary driving` means for said tool, said rotary driving means consisting' in a drive shaft, an intermediate element keyed to the end thereof for limited transverse sliding movement, a crank-pin-bearing member slidably keyed to said intermediate element for sliding at an angle with reference to the keyed connection thereof with said shaft,

and a treadle operated sleeve in which said crank pin bearing member has bearing, for shifting said member and the tool operated thereby into and out of operative position.

5. A machine of the kind described, comprising a vibrating tool mounted for bodily shifting movement into and out of an Operative position, means for vibratingsaid tool, and means for feeding material step-by-step to be operated on by said, tool, said feeding' means having connections constructed and arranged to shift the same to inoperative position as the tool is shifted to inoperative position, and for shifting the feeding means to operative position as the tool is shifted to operative position.

6. A machine of the kind described, comprising a tool mounted and equipped with means for vibrating it and also for shifting,` it bodilvinto and out of operative position while preserving its connectioiicl continuous vibration, feeding means for material coperative with said tool, mounted and connected for vibrating movement and also for bodily shifting into and out of operative position, and means connecting said tool with said feeding means for simultaneous shifting' of both, whereby the tool and feedino' means are each shifted into and out of operative position with respect to the material operated on, in synchronism.

Y'7. A machine of the kind described, comprisinp,- a tool mounted and connected for vibrating operative movement and also for bodily shifting into and out of operative position while preserving its connections for vibrating, a four-motion feed mechanism connected for vibrating movement in timed relation to the vibrations of said tool, said feed mechanism having a mounting for bodily shifting' into and out of operative position, and connections between said tool and said feed mechanism for shifting said feed mechanism backward out of operative position, as the tool is shifted out of operative position, and for shifting the feed mechanism forward into operative position as the tool is shifted into operative position.

8. A machine of the kind described, comprising a perforating punch mounted for vibration and also for bodily movement into and out of operative position while preserving its connections for vibration,` a relatively stationary punch block coperative with said punch in its operative position, a four-motion7 feed mechanism mounted and connected for vibration in timed relation with the vibration of said tool, and a single manually operated mechanism connected Vto the mounting of said feed mechanism and also to said tool for shifting,` said tool and said feed mechanism into and out of their respective operative `positions simultaneously, While preserving continuons driving connections to both.

9. A machine of the kind described, comprising` a tool, means for mounting said tool for vibratory operative movement and also for bodily shifting` into and away from an operative position, rotary driving means for said tool consisting' in a drive shaft, an intermediate element keyed thereto for limited transverse sliding; movement, a member equipped for imparting vibration to said tool siidabiy keyed to said intermediate element for sliding at an angle with reference to the keyed connection thereof With said shaft, means for adjusting said vibration imparting member transversely with respect to said shaft, and means for feeding materiai step-bystep to be operated on by said tool, said feeding means having Conneetions constructed and arranged to shift the same to inoperative position as the tool is shifted to inoperative position and for shifting the feeding; means to operative position as the too] is shifted to operative position.

In testimony whereof I have signed my name to this specification.

JAY A. MACKEY. 

